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NCT07842185Not yet recruitingPhase 2/3

A Multicenter, Three-Arm, Open-Label, Endpoint-Blinded Randomized Controlled Trial to Evaluate the Optimal Duration of Early Tirofiban After Intravenous Thrombolysis in Acute Ischemic Stroke

A Multicenter, Three-Arm, Open-Label, Endpoint-Blinded Randomized Controlled Trial to Evaluate the Optimal Infusion Duration of Early Tirofiban Treatment After Intravenous Thrombolysis in Patients With Acute Ischemic Stroke (INSTANT-2)

Source: ClinicalTrials.gov · Last updated 25 Sept 2026

Brief summary (registry, in English)

Acute ischemic stroke is a leading cause of disability and mortality among dults in China. Although intravenous thrombolysis serves as first-line reperfusion therapy, nearly half of patients fail to achieve vascular recanalization. The reocclusion rate ranges from 14% to 34%, and many patients are left with residual neurological deficits. Early antiplatelet therapy initiated after thrombolysis may sustain persistent reperfusion and improve prognosis. However, current guidelines generally recommend delaying antiplatelet treatment until 24 hours post-thrombolysis due to bleeding risks, and direct evidence for the optimal initiation timing remains lacking. Tirofiban is a rapidly acting, short-half-life, reversible glycoprotein IIb/IIIa receptor antagonist. Previous studies indicate its potential benefits and acceptable safety when administered after intravenous thrombolysis. This is a multicenter, three-arm, open-label, endpoint-blinded randomized controlled trial. A total of 1482 non-cardioembolic patients without large or medium vessel occlusion and with residual neurological deficits (NIHSS ≥4) after thrombolysis will be enrolled. Participants will be randomly allocated to the tirofiban 24-hour group, tirofiban 48-hour group, or blank control group. The primary outcome is the proportion of patients with excellent functional outcome defined as modified Rankin Scale (mRS) score 0-1 at 90 days. Symptomatic intracranial hemorrhage and neurological outcomes will also be evaluated. The study aims to determine the optimal duration of tirofiban treatment after thrombolysis and provide high-level evidence for precise interventions in the acute phase of stroke.

Status (registry)
Not yet recruiting
Phase (registry)
Phase 2/3
Study type
Interventional
Enrollment
1482 (estimated)
First submitted
20 Sept 2026
Start date
19 Nov 2026
Primary completion date
30 Dec 2030
Lead sponsor
Xinqiao Hospital of Chongqing
Diseases
Stroke
NCT number
NCT07842185

What you commit to

  • Study type: Interventional · Phase 2/3
  • Planned participants: 1482
  • From 19 Nov 2026 to the primary completion date, 30 Dec 2030
  • 10 sites in 1 country
  • Visits and tests: ask the trial team, the registry does not list them

Built from the registry fields of ClinicalTrials.gov. It describes the study, not your situation.

Who cannot take part

Copied verbatim from ClinicalTrials.gov and grouped by topic. Only the trial team decides who can take part.

Prior treatment

  • Intracranial hemorrhage confirmed by CT or MRI after intravenous thrombolysis and prior to randomization.

Other illness

  • Pre-existing neurological or psychiatric disorders that interfere with neurological function assessment.
  • History of bleeding disorders, severe cardiac, hepatic or renal disease, or sepsis.
  • Advanced illness with life expectancy less than 6 months.
  • Other conditions deemed unsuitable for enrollment by the investigator.

Lab values

  • History of atrial fibrillation or suspected cardioembolic stroke. Platelet count \<100×10⁹/L on routine blood test.
  • Renal insufficiency with estimated glomerular filtration rate (eGFR) \<30 mL/min.

Other

  • CTA/MRA/DSA demonstrates occlusion of the internal carotid artery, M1 or M2 segment of the middle cerebral artery, anterior cerebral artery, or vertebrobasilar artery.
  • Pregnant or breastfeeding women.
  • Brain tumor with mass effect on imaging (excluding small meningioma). Intracranial aneurysm or arteriovenous malformation (AVM).
  • Current participation in another clinical trial.

Who the study is looking for

  • Age ≥ 18 years.
  • Diagnosis of acute ischemic stroke meeting the diagnostic criteria from Chinese Guidelines for the Diagnosis and Treatment of Acute Ischemic Stroke 2023, and the patient has received intravenous thrombolysis with tenecteplase, alteplase or reteplase.
  • Disabling stroke remains at 2-24 hours after completion of intravenous thrombolysis. Disabling stroke is defined as NIHSS score ≥ 4, or single limb motor subscore ≥ 2.
  • Written informed consent is obtained from the patient or legal representative.

Age in the registry: 18 years to - · Sex: All · Does not accept healthy volunteers

Full criteria on ClinicalTrials.gov

Sites (10)

Sites in registry order. Pick your city on the disease page to sort them by distance.

SiteCityCountrySite status
Dalian Central Hospital
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DalianChinaUnknown status
Taihe County People's Hospital
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FuyangChinaUnknown status
Xingguo People's Hospital, Xinguo Hospital of Gannan Medical University
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GanzhouChinaUnknown status
Ganzhou People's Hospital
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GanzhouChinaUnknown status
The First People's Hospital of Jingdezhen City
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JingdezhenChinaUnknown status
Jingdezhen First People's Hospital
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JingdezhenChinaUnknown status
Jiujiang First People's Hospital
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JiujiangChinaUnknown status
Longyan First Hospital of Fujian Medical University
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LongyanChinaUnknown status
The First People's Hospital of Mianyang (Mianyang 404 Hospital)
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MianyangChinaUnknown status
Xiangtan Central Hospital (The Affiliated Hospital of Hunan University)
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XiangtanChinaUnknown status

This page is information, not medical advice. Discuss any trial with your doctor.